Gasmaster R Series, Руководство по установке, Страница: 34 / 81

Venting Part 5.54
If all contaminants listed in Table 2.1 below are STRICTLY AVOIDED, combustion room can
be used as a source of air intake. This table is shown again below.
Note: In new home installs it is mandatory to bring air in from outside the home while the home is being built. This is
in done to prevent dust and any other contaminants from entering the boiler housing and affecting operation.
Table 2-1 - Corrosive Products and Contaminant Sources
Products to Avoid Contaminated Sources to Avoid
Antistatic fabric softeners, bleaches, detergents, Laundry facilities
cleaners
Perchloroethylene (PCE), hydrocarbon based cleaners Dry cleaning facilities
Chemical fertilizer, herbicides/pesticides, dust, Farms or areas with livestock and manure
methane gas
Paint or varnish removers, cements or glues, sawdust Wood working or furniture refinishing shops
Water chlorination chemicals (chloride, fluoride) Swimming pools, hot tubs
Solvents, cutting oils, fibreglass, cleaning solvents Auto body or metal working shops
Refrigerant charge with CFC or HCFC Refrigerant repair shops
Permanent wave solutions Beauty shops
Fixer, hydrochloric acid (muriatic acid), bromide, Photo labs, chemical / plastics processing plants
iodine
Cement powder, crack fill dust, cellulose, fibre based Concrete plant or construction site
insulation
Venting PART 5.55
The use of ULC S-636 approved PVC/CPVC venting for exhaust is permitted. In cases,
where PVC/CPVC approved 636 venting is used, please follow the same vent length limits as for single wall PP.
These lengths are posted in Table 3.1. Below outlines how to adapt from boiler connection to PVC/CPVC for
exhaust and/or ABC, PVC, etc for air intake.
Adapters
Boilers are designed and shipped ideally for use with 80mm/125mm concentric, pipe in pipe, venting
connection at the top of the boiler. In cases where twin pipe systems are used, a black O-ring seal on the concentric
air intake portion must be used to block air intake. Then the white cap on the separate single pipe air intake must be
removed from the boiler and an o-ring seal added. Now the boiler is ready to be used in a two pipe system(refer to
Venting Part 3 above). Once these rules are followed, use any 80mm PP to PVC/CPVC adapter (for example,
available through
immediately onto the boiler. Pipe size can be reduc
ed to 2” CPVC, but if done, care must be taken to ensure vent
length does not exceed max lengths in chart shown in Table 3.1. Then connect the same adapter on air intake side
and use ABS, PVC or CPVC for air intake vent run.
Vent/Air-Intake Pipe Length Determination
Use table 3.1 to determine the maximum pipe length that can be used. The table calculates pipe length with regard
to use of 90º elbows, and 45º elbows of which both are equivalent to 5ft of straight length pipe. Allowable pipe
lengths for vent and air-intake pipes are shown for Natural Gas.
Table 3.1 Maximum Single Pipe length determination (combined lengths. Exhaust vent pipe should not
exceed ½ these distances, ie.
2” max length is 105 ft, so exhaust should not be longer then 52ft)
Number of Elbows and Equivalent Feet
Connection Length 1 2 3 4 5 6 7 8 9 10
type
2” (60mm)
combined 105 ft
100 ft 95 ft 90 ft 85 ft 80 ft 75 ft 70 ft 65 ft 60 ft 55 ft
Vent Length
3” (80mm)
Combined vent
length 164ft 159 ft 154 ft 149ft 144 ft 139 ft 134 ft 129 ft 124 ft 119 ft 114 ft
**For i
nstallations using PVC exhaust vent, the first seven (7) equivalent feet of vent must be CPVC.”
34
R Series
Gasmaster
with part number EK PP-3PVC, M&G Duravent 3PPSAD-PVCor thru IPEX), to connect
r. Pipe size can be reduc
ed to 2” CPVC, but if done, care must be taken to ensure vent